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11Alexandr11 [23.1K]
3 years ago
15

Calculate the number of moles in 5.96 g KOH

Chemistry
2 answers:
Darina [25.2K]3 years ago
8 0
Collection of data mass(m) =5,96 (given) Molarmass(M) =1(39)+1(16)+1(1)=56 (we use the periodic table to calculate the molar mass of KOH) Moles(n) =?? (It is wat we have to calculate) We can use the formula n=m/M Therefore n=5,96/56=0,10643moles
Bond [772]3 years ago
4 0
? moles KOH = 5.96 x (molar mass of KOH/1 mol)
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<h3>What is Δngas?</h3>

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1 year ago
Is selenium tetrafluoride an ionic or covalent bond?
nasty-shy [4]

Answer:

Synthesis

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Se + 2 F2 → SeF4

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Other methods of preparation include fluorinating elemental selenium with chlorine trifluoride:

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Structure and bonding

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In HF, SeF4 behaves as a weak base, weaker than sulfur tetrafluoride, SF4 (Kb= 2 X 10−2):

SeF4 + HF → SeF3+ + HF2−; (Kb = 4 X 10−4)

Ionic adducts containing the SeF3+ cation are formed with SbF5, AsF5, NbF5, TaF5, and BF3.[3] With caesium fluoride, CsF, the SeF5− anion is formed, which has a square pyramidal structure similar to the isoelectronic chlorine pentafluoride, ClF5 and bromine pentafluoride, BrF5.[4] With 1,1,3,3,5,5-hexamethylpiperidinium fluoride or 1,2-dimethylpropyltrimethylammonium fluoride, the SeF62− anion is formed. This has a distorted octahedral shape which contrasts to the regular octahedral shape of the analogous SeCl62−. [5]

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